Advice, rain down exhaust

[Beaver Cove Deere]

Buy a rain cap for the pipe.

 

[MossRoad]

...

I'm at a loss as to what the issue is?

They're worried about enough water coming down the stack and going through an open exhaust valve into a cylinder. 3" of rain in one cylinder could cause a problem if the engine is cranked since water is not compressible. It might damage something if it's rotated. Similar to a rolled over tractor that has oil in the cylinders.

 

[MossRoad]

Explained better here.

Water Down Exhaust Pipe | Vintage Tractor Engineer

We take a look at what to do if your tractor has had water down the exhaust pipe and may have got into the cylinders.

vintagetractorengineer.com

 

[MossRoad]

Neat old video. Advance to about 27:30.

 

[hosspuller]

Not my tractor so I don't have a dog in this fight... Regardless of the various vertical exhaust pipes some people have...What is the muffler orientation?... The OP has a vertical muffler that the end with a rain bend was off. This allowed 3 inches of rain to enter. I would think any water would then drain through the muffler and into the manifold.

N-C-Jimmy. I suggested turning the engine over by hand. This avoids opening or disturbing the fuel system. Your tractor... Your call...

 

[NorthCountryJimmy]

I popped the muffler off and looked around. Seemed mostly dry. Put it back on and cranked the engine a little by hand. Fired it up, it spat a few black flecks out then idled nicely. All appears fine. Warmed it up then got it under cover. Seems like a non issue now.

 

[etpm]

My YM2310 has a compression release which I use when starting because the manual says to. If there was a lot of water or oil in the cylinders would the small amount the exhaust valves are held open really be enough to prevent bending a rod when turned over with the starter? Though I have never hydrolocked my engine it would be nice to know that just pulling the compression release is enough to safely turn the engine over.
Thanks,
Eric

 

[MossRoad]

I popped the muffler off and looked around. Seemed mostly dry. Put it back on and cranked the engine a little by hand. Fired it up, it spat a few black flecks out then idled nicely. All appears fine. Warmed it up then got it under cover. Seems like a non issue now.

Not to be a poop, but if an exhaust valve was open, of course it would be mostly dry because it would have drained down into the open cylinder.

Anyway..... glad you got it going with little drama.

 

[5030]

Yes, it's not his tractor and it might be ok.
I don't see how 3" of rain down the muffler hole can get much water past the exhaust valves.
/edit - but then it's not my tractor either

One of my M9's sat out in a monsoon, didn't even think about it, just fired it up and blew black wet soot all over the hood.